PowerShell - Discover IP to Hostname (Uses Get-DNSServerResourceRecord)

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$zone = 'Enter Your Domain'

$range = 'xxx.xxx.xxx.xxx', 'xxx.xxx.xxx.xxx' #Enter your range

function Addr2UInt($addr) {

$bytes = $addr.GetAddressBytes()

[array]::Reverse($bytes)

[BitConverter]::ToUInt32($bytes, 0)

}

$addrFrom = Addr2UInt ([Net.IPAddress]::Parse($range[0]))

$addrTo = Addr2UInt ([Net.IPAddress]::Parse($range[1]))

Get-DNSServerResourceRecord $zone -RRType 'A' | ? {

$addr = Addr2UInt $_.RecordData.IPv4Address;

$addrFrom -le $addr -and $addr -le $addrTo

}

Then can Out-File or Export-csv for this

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